Oven



G. A. YOUNG wn 3. w M

OVEN

Filed Aug. 22, 1921 2 Sheets-Sheet 1 .nuunwnun v G. YOUNG OVEN 2 Sheets- Sheet 2 Filed Aug. 22, 1921 UNITE@ STATES smear' ors-ics.

emiten A. YOUNG, or nnraorr, MICHIGAN.l

application illed August 22, 1821. Serial No. b191,117.

To all whom t may concern:

`Be it knownI that I, Grenen A. YOUNG, a citizen of the 'United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented, certain new and useful Improvements in Ovens, of which the following is a specification,

is invention relates to ovens and a method of recirculating air within an oven,

proximity to a heating and my invention aims to provide a forced4 draft apparatus by which air within an oven may be maintained in circulation; air admitted to the oven, or vfumes and gases exhausted from the oven. In the first instance, the circulation of air permits of a lform temperature being maintained throughout the oven for drying, curing, airing or other purposes. Second, by admitting air to an oven the temperature of the air therein may be lowered or otherwise regulated, and third, by providing theex haust for fumes and gases, it will be possible to quickly drive the fumes and gases from the oven in order that the same may be safely entered or used.

y invention further aims to arrange. ducts or'conduits in an oven so that air may be taken from the lower part of the ove-n and the upper part thereof and returned to the lower part of the oven in apparatus, which may be electrically operated heating units, a steam heating system, a gas heating system. fire chambers or any safe and easily controlled heating apparatus which can be installed in an oven. The arrangement of the ducts or conduits `is such as not to l materially interfere with the capacity of the oven or loading and unloading of the same. I.

My invention still further aims to provide an oven, kiln, or air heated chamber that may be advantageously used in the automobile industry for the treatment of automobile parts, particularly/'the drying of painted or otherwise finished parts and the drying or baking of cores used in molding metallic parts of an automobile. VThe construction entering into the oven and the method of recirculating air will be hereinafter described and then claimed, and reference willnow be had to the drawings, wherein `a portion of reference being had therein to. the accom-` h 'panying drawings.

Figure 1 isa plan of the oven';

Fig. 2 is a longitudinal sectional view takencn the line IIL-II of Fig. 1;

Fig. 3 is a cross sectional view of the oven taken on the line III-III of Fig. 2;

Flg. 4 is a vertical cross Sectional view of an oven, illustrating a steam eating apparatus for the oven, and

Fig. 5 is a, similar view showing a gas burning apparatus for heating the oven.

In the drawings the reference numeral 1 denotes an oven', of a building and an end wali 2 of the oven 1s provided with a large doorway 3 adapted to be closed by doore'd.

Extending longitudinally of the oven, below the top or roofthereof is a duct or due 5 having depending ends 6 and 7, the former being adjacent the doorway 3 and the latter adjacent the rear wall 8 of the oven. The depending ends 6 and 7 of the Vdue 5 are open adjacent the bottom or door 9 of the chamber, or compartment oven and in directions away from the walls I 2 and 8, so that the ends of the'ne'may receive air from above the bottom or door 9 ot the oven.

The iiue 5, along the top or ceiling of the oven has a plurality of air inlet openings 10 to receive air from the upper portion of the oven, and said ue has an upright portion 11 extending through the top wall or roof of the oven tional form of motor driven exhaust fans 12 `suitably mounted on the top wall or roof. of

the oven.

Extending transversely of the oven, adja cent the flue 5, is a duct or conduit 13 having an upright portion 14 extending through the top wall or roof of the oven and connected to the fan 12 'by a two-way connectionI 15, said two-way connection opening to the atmosphere and having a damper 16 which may be regulated to cause the fan to exhaust into the conduit 13 or to the atmosphere, or admit cold air to the conduit 13 to regulate the temperature within the oven. Any suitable means may be employed for conveniently adjusting the damper 16.

The conduit 13 extends towards the side walls of the oven and each end of theconduit has depending flared or enlarged branches 17 disposed in parallelism at the side walls of the oven and extendin in proximity to the bottom or iloorr9o the oven, the `lower ends of the conduit branches and connected to a convenas shown in vthe heated air rising in 17 y being open and turned inwardly, so as to direct incoming air centrally of the oven and particularly adjacent an electric heating ap aratus 19 in proximity to each side wall o the oven. Each apparatus is of a conventional form and has been illustrated in Figs. l, 2 and 3. Instead of using an electrically operated heating apparatus, I may provide a steam heating apparatus 2O Fig. 4, or a gas burning apparatus 21, as shown in Fig. 5. In either instance, the air liberated by the lower ends of the conduit branches 17 impi'nges against the heating apparatus and is heated thereby, ally entering the ue 5 from where the .fan 12 causes the air to be returned to the conduit 13 and distributed at the bottom of the oven.

By reference to Fig. 2, it will be noted that the conduit branches 17 are comparatively wide and provide a long outlet for air at each side of the oven, thus insuring a wide distribution of air within the oven and consequently a wide range of circulation.

In order that the temperature within the oven may be reduced by the admission of cold fresh air thereto, the walls 2 and 8 of the oven are, provided with side apertured air inlet casings 22, said casings resting on the bottom or iioo-r 9 of the oven contiguous to the side wallsthereof. The casings 22 have register fronts 23 by which the admission of cold air to the oven is controlled, and the location of the casings does not interfere with the depending ends of the iiue 5, the branches 17 ot the conduit 13, or the heating apparatus within the oven.

It is through the medium ot' the air inlet casings 22 and the two-way connection that a circulation of air may be maintained in the oven for exhaust-ing gases and fumes therefrom, and this is necessary when obnoxious gases or fumes are'liberated by articles being dried Within the oven, so that Workmen may safely enter the oven or the o-ven be opened.

1. In an oven, substantially inverted U-shaped flues disposed at an angle to each y other and having the lower ends thereoiE open at the bottom of the oven, said fines communicating with each other above sald oven so that air may circulate through said iues.

the oven and eventu' 2. Oven ues as called for in claim 1, wherein one of said ues has flared ends affording large discharge openings into the oven.

3. In an ovenlmving a heating apparatus, a longitudinatue adapted from the bottom of the oven at the ends thereof, an exhaust fan communicating with said Hue, and a transversely disposed conduit adapted to receive the air, from said fan and vd istribute the air at the heating apparatus in the oven.

4. An ovenas in claim 3, wherein the flue has .openings to receiveair from the 'top o the oven.

5. An oven as in claim 3, characterized by the fan having a two-way connection b v which air may vbe exhausted to the atmosphere'.

6. An oven having a heating apparatus, a Hue adapted to remove air from the bottom of the oven at the ends thereof and from along the top of the oven, an exhaust fan communicating with said flue, a conduit adapted to comuuuiicate with said fan and discl'iarge air at the bottom of said oven adjacent said heating apparatus, and means adapted to admit air to the oven.

7. An oven havinga heating apparatus, a flue adapted to remove air from the bottom of the oven at the ends thereof and from along the top of the oven, an exhaust fau communicating with said flue, a conduit adapted to communicate with said fan and discharge air at the bottom of said oven adjacent said heating apparatus, a two-way connection interposed between said fan and conduit and adapted to communicate with the atmosphere, and a damper in said two'- way connection.

8. An oven having a flue adapted to remove air from the bottom of the. oven at the endsv thereof and from along the top of the oven, an exhaust fan communicating with said fine, a conduit adapted to communicate with said fan and discharge air at the bottom of said oven adjacent said heating apparatus, and side air inlet casings at the bottom of said oven.

In testimony whereof I aiiix my signature in presence of two witnesses.

GEORGE A. YOUNG.

heating appara-tus, a

Witnesses:

ANNA M. DORR, KARL H. BUTLER.

to remove air' 

